Tool for joining metal-strap ends.



E. B. FLORA & J. F. MURPHY.

' TOOL FOR JOINING METAL STRAP ENDS.

' APPLICATION FILED SEPT 2, 1913.

1,083,607, Patented. Jan. 6, 1914.

3 SHEETS-BHIJET l,

E. B. FLORA 6; J. P. MURPHY.

TOOL FOR JOINING METAL STRAP ENDS.

. APPLICATION FILED SEPT.2,191S. 1,088,601

Patented J an. 6, 1914.

3 SHEETSSHEET 2.

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TOOL FOR JOINING METAL STRAP ENDS.

PPPP IGATION FILED SEPT 2 191 1,083,607. Patented Jan. 6, 1914. I sssssssssssss a.

W mo %W//% bed-frame, and the handle of which may be of any desiredlength. An adjustable stopstud 38 is shown to project'from the rear faceof the link to engage the stop 34 and limit the extent of raising thelever. A wooden stop-block 39 on. a" ledge 40 at the back of thebed-frame wall 10 and bolted to that wall, limits the extent of loweringthe lever, which rests thereon when it has been operated to bring thejaw-lips 19 and 19 into meeting contact.

I strap-sections To operate the tool, with the lever raised, themutually-overlappii'ig end-portions of a metal strap ll are introducedinto the position represented in Fig. 6, to bear upon the elevatedportions of the seat 24 and against the wedge-shaped ends of thestationary pins 20. .By thus lowering the handle end of the lever toturn the link 35 forwardly, the toggle 31 is straightened and thelink 28is rocked forwardly to advance the head-block 25. In this advance,theadjacent edge of the work 41 is attacked at two points by the pins 21and the pressure grips the opposite edges of the work at these and'therespectively opposite points between the opposing beveled ends of thecrimping-pins, there curling the ed 'es into the grooves 23 and 23outwardly (with relation to the face of the tool). Continued movement ofthe jaw 18 bends and cups the straps between their edge-portions intothe seat-depressions, so that in the final part of the downward movementof the operating lever, which abuts the lips together, the crimping-pinsforce the outwardly-curled edge-portions of the straps toward eachother, as represented in Fig. 7, and the parts cooperate to bulge thecrirnped into the concavely-curved ends of the pins and produce theshape of the joints l2 illustrated in Figs. 8 and 9, thereby firmlylocking the straps one within the other. The opening through thetailpiece 30' being of elliptical shape the pivotpin 29 has playtherein, and the rocking yoke-link 28 through the opening in which thesaid pin 29 also passes causes the head: block 25 carried by thetail-piece 30 to re ciprocate in a straight horizontal line and obviatesall binding thereof in its guides.

The herein described construction of tool renders it very powerful forits purpose, which it accomplishes without requiring the application ofgreat power to the operating lever and is therefore easy of operation.

What we claim as new and desire to se cure by-Letters Patent is 1. Atool for jointing metal strap-ends, having a bed-frame, a stationary jawonthe bed of said frame, a head-block reciprocably supported on said bedand having a tailpiece, a jaw carried by the head-block, a seat for thework supported on the bed to extend between the jaws, a link-connectingthe tail-piece with the frame, a toggle-lever pivotally connected at itsforward end with said tail-piece and link and at its opposite end withsaid frame, a link connected at its lower end with thejoint between thetogglemernbers, and an operating lever fulcrumed in hearings on saidframe and connected with the opposite end of the last-named link.

2. A tool for joining metal strap-ends, having a bed-frame, a jawstationarily supported on the bed of said frame and provided with .alip, a head-block reciprocably supported on said bed and having atailpiece, a jaw confined on the headblock to reciprocate with it andprovided with a lip, crimping-pins projecting opposite each other fromthe j aw-faces, a seat for the work supported to extend beneath theopposing 1i as between the jaws, a link connecting said tailpiece withthe frame, a toggle-lever piv- ,otally'connected at its forward end withsaid tail-piece and link and at its opposite end with said frame, a linkconnected at its lower end with the joint between the toggle-members,and an operating lever fulcrumed in hearings on said frame and connectedwith the opposite end of the last-named. link.

ELLSWORTH E. FLQRA. JOHN ll. In presence of i A. G. Freonrn, '0. (J.Amine.

